.clear::after {
    content: '';
    display: block;
    clear: both;
}

* {
    margin: 0;
    padding: 0;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
}
body{
    font-family: 'ali-regular', "PingFang SC", system-ui,"Microsoft YaHei", '微软雅黑', Arial, sans-serif;
}